Gitea act_runner - Container Hardening Bypass via Workflow Container Options
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.4epss 0.3%
exploitation probability
0.3%top 82% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Gitea act_runner with the Docker backend (through act 0.262.0) passes a workflow's container.options string to the Docker job container's HostConfig and, when configured with privileged: false, forces only the Privileged flag off while merging options such as --pid=host, --cap-add, and --security-opt unchanged. A user who can run a workflow on a Docker-backed runner can create a job container with host namespaces and broad capabilities and escape to the host as root despite privileged mode being disabled.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
Gitea · act_runnerpublic PoCs found — 1
cve_referencegithub.com/bikini/exploitarium/tree/main/gitea-act-runner-container-options-pocunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.